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The Spherical Form of the Earth. A Reply to Parallax, in Letters to a Friend

J. DYER (M.R.C.P.)

出版	Trübner and Company, 1870
URL	http://books.google.com.hk/books?id=kpJaAAAAcAAJ&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN